Mascaras may cause irritant contact dermatitis

Area of Science:

• Dermatology
• Cosmetic Science
• Toxicology

Background:

• Adverse cosmetic effects are often linked to soaps or eye makeup.
• Reactions can stem from irritants or sensitizing agents in cosmetics.
• Previous studies highlight varying causes of cosmetic-related adverse effects.

Purpose of the Study:

• To assess the irritation potential of commercially available mascaras.
• To identify specific ingredients or formulations linked to skin reactions.
• To investigate the causes of contact dermatitis from mascara use.

Main Methods:

• Seven mascaras were tested on 15 healthy individuals.
• A randomized and blinded study design was employed.
• Skin reactions were evaluated using visual assessment and non-invasive measurements.

Main Results:

• Two out of seven mascaras caused pronounced skin inflammation.
• These reactive mascaras were formulated with volatile petroleum distillate.
• Conventional emulsion mascaras with stearate did not induce significant reactions.
• Findings suggest solvent-based formulations may contain irritating substances.

Conclusions:

• Solvent-based mascaras, particularly those with volatile petroleum distillates, may induce contact dermatitis.
• Irritating substances in mascara formulations are a potential cause of adverse skin reactions.
• Further investigation into mascara ingredients is warranted to ensure product safety.